That’s a really high background noise level. It looks like it’s around -90. And it appears to be associated with the peaks. Can you contact someone a few miles away from you and see if they’re seeing this as well? I’d like to know how localized it is.

That is the QRM from PLC we have in FR every where people use it for home TV and PC home net.People have concerns about cell phone but not for these electromagnetic waves QRM generator that have invaded their home

Did the noise just start or has it been around quitea while? When we have encountered noises in the past,the first thing we think is, what changed, what havewe added to the home. Have you shut off circuit breakers trying to see ifit disappears? That is an easy way to isolate the noise if it is local in your home. If nothing else,that eliminates the home as a problem.If it is not in your home, maybe a noise cancellersuch as a Timewave ANC-4 or a DX Engineering NCC-2which is what we have here. That stops it from gettingin the radio, which is the ideal way to make betterreception.We had a 30 over noise last year that we could notlocate and also had no pattern or duration thatcould be tracked. It was not power line noise, butthe NCC-2 enabled us to reduce it to just about nothing. The noise has been gone, for months now,but we are ready should it ever rear its ugly head.

It started about 2 weeks ago. Nothing here in the house and no changes. Only thing I can think of is that we have new people that bought the house next door and something they have plugged in is causing it. They are only here on the weekends so I will ask them when they get here this weekend. My dipole is setup on the property line between our 2 houses

People are also friends and nextdoor by here.I Do not want to make trouble between us.The cable in ethernet could be a solution but difficult in villa having two floorsi have found the root of the QRM using a portable TRX.When they stop their PLC I have no QRM. I remember the years when we had a simple Heatkit HW101 and no QRm... hi73jean claude F6eju